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The ornamental design for a differential pressure indicator, as shown and described. |
FIG. 1 is a top, front and right side perspective view of a differential pressure indicator showing our new design;
FIG. 2 is a bottom, rear and left side perspective view;
FIG. 3 is a top plan view;
FIG. 4 is a right side elevational view, the left side elevational view being identical;
FIG. 5 is a typical end elevational view; and,
FIG. 6 is a bottom plan view thereof.
Tosi, Robert B., Peletis, George N., MacPherson, Ronald E.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Apr 11 1991 | PELETIS, GEORGE N | WILKERSON CORPORATION A CORP OF COLORADO | ASSIGNMENT OF ASSIGNORS INTEREST | 005730 | /0768 | |
Apr 11 1991 | TOSI, ROBERT B | WILKERSON CORPORATION A CORP OF COLORADO | ASSIGNMENT OF ASSIGNORS INTEREST | 005730 | /0768 | |
Apr 11 1991 | MACPHERSON, RONALD E | WILKERSON CORPORATION A CORP OF COLORADO | ASSIGNMENT OF ASSIGNORS INTEREST | 005730 | /0768 | |
May 30 1991 | Wilkerson Corporation | (assignment on the face of the patent) | / | |||
Jun 25 2001 | Wilkerson Corporation | CKD-CREATEC CORPORATION | MERGER SEE DOCUMENT FOR DETAILS | 012607 | /0078 | |
Jun 30 2001 | CKD-CREATEC CORPORATION | Parker-Hannifin Corporation | MERGER SEE DOCUMENT FOR DETAILS | 012598 | /0990 | |
May 08 2002 | Parker-Hannifin Corporation | PARKER HANNIFIN CUSTOMER SUPPORT INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 012928 | /0198 | |
Jun 30 2003 | PARKER HANNIFIN CUSTOMER SUPPORT INC | Parker Intangibles LLC | MERGER SEE DOCUMENT FOR DETAILS | 015215 | /0522 |
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